## Kerala PSC Previous Years Question Paper & Answer

Title : Junior Instructor Lift and Escalator Mechanic Industrial Training Department
Question Code : A

Page:9

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Junior Instructor Lift and Escalator Mechanic Industrial Training Department' And exam conducted in the year 2020. And Question paper code was '003/2020/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 9 out of 11
Excerpt of Question Code: 003/2020/OL

Question78:-An ideal insulating material should have low

A:-insulation reistance

B:-dielectric strength

C:-dielectric loss angle

D:-mechanical strength

Question79:-Two wire A and B of the same material and length | and 21 have radius rand 2r respectively, the ratio of their
specific resistance will be

D:-1:8

QuestionB0:-Across the surface of a charged conductor, the electric
A:-the field is continous

B:-potential is discontinuous
C:-field is discontinuous
D:-none of the above
Question81:-In magnetic circuits, an air gap is usually inserted so as to
A:-increase in mmf
B:-prevent saturation
C:-increase in flux
D:-the increase in inductance
Question82:-An Electromagnetic field is radiated from a
A:-stationary point charge
B:-a capacitor with the DC voltage
C:-a conductor camying in a DC current
D:-an oscillating dipole
Question83:-In a series RLC circuit, the maximum voltage across the capacitor occurs at a frequency
A:-double the resonant frequency
B:-below the resonant frequency
C:-1.414 times the resonant frequency
D:-equal to resonant frequency
Question84:-Wave winding is employed in a DC Machine of
A:-high current and low voltage rating
B:-low current and high voltage rating
C:-high current and high voltage rating
D:-low current and voltage rating
Question85:-The flux in transformer core
C:-remains constant 178506೮1೪6 ೦81026
D:-none of the above
Question86:-In cylindrical Rotor ............ portion of the rotor is wound
A:-one third
B:-two third
C:-one half
D:-whole